Equalizing gear for locomotives



Jan. 1 3, 1931 T. H. FAwcETT EQUALQZING GEAR FOR LOCOMOTIVES Filed June 25. 1929 2 Sheets-Sheet 1 T. H. FAWCETT EQUALIZING GEAR FOR LOCOMOTIVES Jan. l13, 1931.

Filed June 25, 1929 2.She91'.S-Sh9`b 2 Jl I @ww/ww Patented Jan. 13, 1931 UNITED .srArss THOMAS H. FAWcETT, or PHILADELPHIA, LPENivsxrlvAivIA EQUALIZING GEAR FOR Locolvro'rgwes i Application filed June 25,

This invention relates'to the equalizing gear of a locomotive or other vehicle having a rear trailer truck.

One object of the invention is to so construct the equalizing gear that the main spring rigging of the driving wheels can be connected with the spring rigging of the trailer truck so that the wheel base of the locomotive can be materially shortened. This object is accomplished by locating the trailer equalizing` beams outside the lines of the driving wheels of the locomotive. Vith this construction the forward trailer truck wheels canxbe placed near the rear driving V wheels, thus shortening the total wheel base. A further object of the invention is to so construct the cqualizing gear that greater accessibility can be had for repairs.

And a still further object is to improve the riding of the locomotive. These objects are attained in the Jfollowing manner, reference being had to the accompanying drawings, in which: s Fig. 1 is a side view of the rear vportion of the main frame of a locomotive, and a trailer truck shown by dotted` lines and the spring rigging shown in full lines;

Fig. 2 is a plan view showing the main fralne and the trailer truck frame in dotted lines and spring rigging in full lines; and

Fig. 3 is a sectional view o-n the line 3 3, Fig. 2.

Referring to the drawings, 1 is the main frame of the locomotive inthe present instance. 2 is the rear driving axle. 3 is a rear driving wheel. 4 is a trailer truck frame. 5 are the axles, and 6 are the wheels of the truck. These'frames may be of any type desired without departing from the es sential features of the invention.

The trailer truck frame is pivotally connected to the main frame of the locomotive by a pivot pin 7. 8 is the equalizing gear on the main frame of the locomotive. The springs 9 are the last springs of the series, each of which bears upon a box 10 of the rear driving axle 2. One vend of the spring is connected by a link 11 to an equalizing lever 12, which in turn is connected to the other *spring jbears upon the box of the 'forward 1929. serial No. 373,668.

equalizing mechanisms-on the locomotive frame. v Y i The spring9 on yeach side of theloco-moi tiveframe isl connected to the cross equalizingbeam 13, the endsof the spring extending into eyes 14 Yin the beam in the present in.- stance. The endsv 13a of Ythis beam extend beyond the line of the main. driving wheels of the locomotivelas shown in FigfQ, and links 15 connect the ends of the vbeam to equalizing beams 16 fulcrumed at 17 on the forward `extension 4a of the trailer truck, the fulcrum of the lever being beyond ythe line ofthe wheels in the present instance. I E The opposite end of each beam V16 is con- 6 nected by a link 18 to the first equalizing spring 19 on each side of lthetraifler truck of the locomotive. This spring in the present instance is mounted'inthe frame .4, andeach '70 axle 5. 'Y The spring 19 is connected by a link 20 to an equalizing lever on the frame 4, and this lever in turn lis :connected by va link 23 to the equalizing spring 24 whichrrests upon the box of the rear axle 5, the opposite end of the spring being .connected by a link 25 to--the frame of the-truck. Y Y l A The equalizing gear of the trailer truck is of the ordinary type, but the coupling of the equalizing bea-ms `17 to `extensions ofthe cross equalizing beam 13 beyond the line of the wheels is a novel feature of this invention. Y

The cross equalizing-beam-l has stopslb which are arranged-tocome'in contact withv the main frame of the locomotive. They are solecated as to allow a certain amount. of free movement of the cross equalizing beam. vThe 'lower ends of the links 15 fd'e- 90 scribe'the arc c due to the normal swing of 'y the truckiin curving. i y

' It will be understood that while I have showntwo axles on the truck, the invention can be yapplied to ytrucks having more or less than two axlesif desired. 1

It will also be understood that vthe invention is Inot limited-to a locomotive,but it is applicable where `two or more Asets of .equalizers arefconnected, and whether the truckis 2 ,Y K i it located at front or rear or at both ends of the main frame equalizing system.

I claim:

l. The'combination in an equalizing gear for locomotives, of a main frame; an equalizer mounted on each side thereof; a cross equalizing beam located above the main frame; trailer truck pivoted to the main :trame and having equalizing mechanism thereon; and a connection between the equalizing mechanism of the main frame and theequalizing mechanism of the trailerctruck, said connection being outside of the line of the Wheels of the locomotive.,` .A f-

2. The combination in an equalizing rmechanism; of a main equalizingge'ar; a

cross equalizing beam to which the main gear is connected, said cross equalizing beam extending beyond the main equalizing gear at each side; a second equalizing gear; and an cqualizing beam connected to the extensions ot the cross cqualizing beambeyond the irst mentioned equalizing gear and to the first member ot the second equalizing gear.

3. The combination in a locomotive, of a main frame; equalizing mechanism on said main frame; a trailer truck pivoted to the mainframe; an equalizing gear on the trailer truck; a cross equalizing beam hung from the main equaliaing gear and extending on each Side of the traine beyond the line of the `Wheels, said trailer truck having extensions beyond the lines oi' the trailer truck equalizing gear; and equalizing levers pivoted to said extensions, one end ot each lever beingconnected to the ends of the cross equalizing beam, and the-other end of the leverrbeing connected to the equalizing gear on the trailer Y truck.

il. The combination in a locomotive, ot a main frame; a rear axle; driving Wheels on the axle; a main cqualizing gear, the rear springs of which rest upon the boxes ot said axles; a cross equalizing beam hung from the springs and extending beyond the 'line of the Wheels and their connected parts;

a rear trailer truck pivoted to the main frame; an equalizing gear at each side of the trailer truck, the frame of the trailer truck having lateral extensions located between the Wheels of the main frame and those of the vtrailer truck; equalizing levers arranged at 'an angle and pivoted to the extensions; and

links connecting the ends of the cross equal- 'iZing beams with the forward ends of the levers, the rear ends of the levers being connected to an equalizing gear of the trailer truck. y

5. The combination in an equalizing gear, of a main frame; equalizing Vmechanism mounted thereon; a truck; equalizing mechanism on the truck; anda connection between the equalizing mechanism of the main frame and that of the truck, said connection being above the main frame outside of the line of the Wheels of the locomotive.

6. The combination of a main frame; an equalizerl mounted thereon; a cross ecualizing beam extending beyond the main Irame; a truck pivoted to the main frame; equalizing mechanism thereon located outside of the lines of the Wheels of the said trucx; lateral extensions on the truck beyond the lines of the Wheels; an equalizing beam tulcrumed on the extensions; connections between said equalizing beams and the cross equalizing beam of the cqualizing gear of the main frame; and connections between the beams `and the equalizing gear of the truck.

THOMAS H. FA'WCETT. 

